| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce the number of scanners while keeping a function of canceling variance in the threshold voltage Vth of a drive transistor. <P>SOLUTION: A sampling transistor T1 of a pixel circuit 2 conducts according to a control signal supplied from a scanning line WSn during a sampling period and samples a video signal supplied from a signal line SL to a pixel capacitor Cs. A drive transistor Td supplies an output current according to the sampled video signal to a light emitting element OLED. The pixel circuit 2 has a transistor 2 for canceling a threshold voltage Vth to be connected to the gate of the drive transistor Td. The transistor T2 operates on/off according to a control signal applied to a scanning line WSn-k which is temporally preceding to the current line and preliminarily sets the gate of the drive transistor Td at a reference potential prior to sampling the video signal. <P>COPYRIGHT: (C)2008,JPO&INPIT |
